<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .stl {
            width: 32px;
            height: 32px;
            border-radius: 0 18px 20px 18px;
            transform: rotate(-135deg);
            background-color: #8470FF;
            font-size: 15px;
            text-align: center;
            line-height: 32px;
            color: white;
            border-color: #000;
        }


    </style>
</head>
<body>
<div class="stl">
    <div style="transform:rotate(-225deg)">起</div>
</div>
<div class="stl" style="margin-top:12px;background-color: #ff0000">
    <div style="transform:rotate(-225deg)">终</div>
</div>

<div class="circle"></div>
</body>
</html>